Distribution switch control equipment, new energy equipment, photovoltaic equipment, electronic components, high and low voltage electrical appliances, power equipment, instrumentation and parts, industrial automation control system devices, communication switching equipment, auto parts, motorcycle parts, transformers, rectifiers, inductors, junction boxes, frequency converters, soft start cabinets, thermostats, transformers, charging piles, switches, R&D, manufacturing, processing and sales of electric energy metering boxes, complete sets of electronic control equipment, power fittings, wires and cables, household appliances, sensors, relays, circuit breakers, power fire monitoring equipment, intelligent lighting equipment, and microcomputer comprehensive protection devices; sales of Wujinjiaodian; providing paid assistance services to households; computer software development; import and export of goods, and import and export of technology